Help children learn life skills
The first Trips for Kids chapter was started in Marin, California, in 1988, with the goal of using mountain bike rides to help at-risk kids gain life skills. Volunteer at one of more than 80 chapters around the world—or start one in your area.

Turn your training miles into money
Download the free Charity Miles app (available for iPhone and Android) and saddle up. Ten cents for every mile you ride goes to one of 24 charities (including Autism Speaks and the Wounded Warrior Project). Funds come from corporate sponsors.

Fix up used bikes
If you know what a wrench is and live in the San Fransisco Bay Area, you can help the Silicon Valley Bicycle Coalition fix up and donate bikes to underprivileged kids and families. The group also offers mini repair courses so you can improve your own skills.

Help lead riding and repair classes
Philadelphia-area residents can volunteer at one of Neighborhood Bike Works’ two downtown locations. The organization teaches kids to ride and repair bikes, and runs a retail and repair shop. Help with one-day workshops or regular earn-a-bike classes.

Underwrite a bike donation
World Bicycle Relief provides its special Buffalo Bikes, complete with a tool kit and pump, and trains local mechanics to help fix them—so recipients, mostly in Africa, can ride to school, work, or a health clinic. Give $25 for a set of wheels or $134 for a bike.

Introduce cycling to kids with disabilities
Your donation enables Athletes Helping Athletes to provide handcycles to kids in wheelchairs so they can feel the joy of riding bikes. Give during June and July and get $10 off a purchase from Road Runner Sports, whose CEO founded the organization.

Make the roads safer to ride
Pro cyclist Dave Zabriskie launched Yield to Life to educate drivers and cyclists about road safety and courtesy so more people will ride bikes for their health as well as the planet’s. Donations support educational programs and materials.

Assist victims of human trafficking
Give $88 and Seattle-based 88Bikes will buy a bicycle from a vendor in a developing country (mostly Southeast Asia and Africa). Recipients, many of whom are girls freed from human trafficking, gain freedom and independence, and the area’s economy gets a boost. All funds go to bike purchases.

Let your old bike transform someone else’s life
New Jersey-based Pedals for Progress sends used bikes to developing countries such as Albania and Uganda to provide work opportunities and inexpensive transportation to schools. Over the past 24 years, it has donated 130,000 bikes in 38 countries.

Teach healthy habits to kids through cycling
You can also donate money, but CYCLE Kids, a Boston-based organization that promotes cycling as a healthy activity for kids, offers a unique way to raise funds: Post items on eBay, then use MissionFish to direct a percentage of your proceeds to the charity.

Support sustainable living
Oakland, California-based Cycles of Change combines cycling with environmental education through rides and earn-a-bike programs. The organization accepts bike and equipment donations.

Recycle your bicycle
Tucson, Arizona’s BICAS accepts castoff bikes and components. Frames in good-enough shape are rehabbed in build-a-bike classes, while items too damaged to be repaired are turned into art and bike racks, which are sold at the organization’s store to raise funds.